
Twenty-one is a famous card game where you must go measuring and buying cards who get closer to 21 wins, however, if you pass 21, you lost!
Only Proton reports exist so far.
1 report · Low confidence: all reports predate a major ecosystem update.
No native Linux build — Proton only
1 report · Low confidence: all reports predate a major ecosystem update.
No reports yet
No anti-cheat reports yet
Summary based mostly on historical data from ProtonDB. Fresh reports from your setup help keep it current.
The newest report is over a year old — compatibility may have changed since.
All reports predate Proton 9.0 (May 1, 2024) — they may not reflect current behavior, so a fresh report would help.
No guide cards yet — curated troubleshooting for Twenty One will appear here.